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Inorganic Chemistry

Inorganic Chemistry

IF: 4.3
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Artificial Photosynthetic Assemblies Constructed by NH2-UiO-66 Decorated with Spatially Separated Dual Cocatalysts for Enhanced Photocatalytic Uranium?…

Published:11 December 2024 DOI: 10.1021/acs.inorgchem.4c03786
Xudong Wu, Kaifu Yu, Yizhou He, Xin Cao, Tao Chen, Wenkun Zhu

Abstract

The phenomenon of rapid migration of photogenerated charges in natural photosynthetic systems has motivated the design of efficient photocatalysts capable of fast charge separation and efficient reaction kinetics for photocatalytically assisted enrichment and separation of uranium U(VI) in uranium wastewater. In this study, we developed a biomimetic photocatalytic system MnOx/NH2-UiO-66-rGO (M/UiO-rGO) with spatially separated dual cocatalysts. Among them, rGO functions to capture electrons and participates in reduction reactions, while MnOx captures holes and participates in oxidation reactions. The M/UiO-rGO catalyst exhibits excellent performance in photocatalytic reduction of uranium (reaching 91.8% in 1 h), and even under natural light conditions, it exhibits excellent uranium removal ability (80.4%). Using multispectral coupling technology, we further confirmed that enriched uranium undergoes a continuous and complex reaction process of “capture-reduction-free radical oxidation–nucleation–crystallization”. This work presents a viable strategy for designing biomimetic photocatalysts with efficient charge separation and rapid reaction kinetics for environmental purification purposes.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Ascorbic Acid 50-81-7 C6H8O6 1968 suppliers $6.00-$2380.00
Acetic acid 64-19-7 C2H4O2 1775 suppliers $10.00-$9280.00
Sodium hydroxide 1310-73-2 NaOH 1358 suppliers $14.00-$17490.00
N,N-Dimethylformamide 68-12-2 C3H7NO 1313 suppliers $11.20-$12200.00
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